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<p>The C++ standards committee publishes experimental C++ language and library extensions for future standardization.
</p>
<p>Note: until 2012, these publications used the TR (technical report) format. Since 2012 ISO procedure changed to use the TS (technical specification) format.
</p>
<table class="wikitable">

<tr>
<th>ISO number</th>
<th>Name</th>
<th>Status</th>
<th>links
</th>
</tr>
<tr>
<td> ISO/IEC TR
<p>18015:2006
</p>
</td>
<td> Technical Report on C++ Performance
</td>
<td> Published 2006 (<a rel="nofollow" class="external text" href="http%3A//www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm%3Fcsnumber%3D43351">ISO store</a>)
<p>Draft: <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/TR18015.pdf">TR18015</a> (2006-02-15)<br>
</p>
</td>
<td> <code>std::hardware</code>
</td>
</tr>
<tr>
<td> ISO/IEC TR
<p>19768:2007
</p>
</td>
<td> Technical Report on C++ Library Extensions
</td>
<td> Published 2007-11-15 (<a rel="nofollow" class="external text" href="http%3A//www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm%3Fcsnumber%3D43289">ISO store</a>)
<p>Draft: <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1745.pdf">n1745</a> (2005-01-17)<br>
TR 29124 split off, the rest merged into C++11
</p>
</td>
<td>
</td>
</tr>
<tr>
<td> ISO/IEC TR
<p>29124:2010
</p>
</td>
<td> Extensions to the C++ Library to support mathematical special functions
</td>
<td> Published 2010-09-03 (<a rel="nofollow" class="external text" href="http%3A//www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm%3Fcsnumber%3D50511">ISO Store</a>)
<p>Final draft: <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3060.pdf">n3060</a> (2010-03-06). Under consideration to merge into C++17 by <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4437.pdf">n4437</a> (2015-04-09)
</p>
</td>
<td> <code>hermite</code>, <code>legendre</code>
<p><code>laguerre</code>, <code>ellint_1</code><br>
<code>cyl_bessel_i</code>, <code>riemann_zeta</code>
</p>
</td>
</tr>
<tr>
<td> ISO/IEC TR
<p>24733:2011
</p>
</td>
<td> Extensions for the programming language C++ to support decimal floating-point arithmetic
</td>
<td> Published 2011-10-25 (<a rel="nofollow" class="external text" href="http%3A//www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm%3Fcsnumber%3D38843">ISO Store</a>)
<p>Draft: <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2849.pdf">n2849</a> (2009-03-06)<br>
May be superseded by a future Decimal TS or merged into C++ by <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3871.html">n3871</a>
</p>
</td>
<td> <code>decimal32</code><br><code>decimal64</code><br><code>decimal128</code>
</td>
</tr>
<tr>
<td> ISO/IEC TS
<p>18822:2015
</p>
</td>
<td> C++ File System Technical Specification
</td>
<td> Published 2015-06-18. (<a rel="nofollow" class="external text" href="http%3A//www.iso.org/iso/catalogue_detail.htm%3Fcsnumber%3D63483">ISO store</a>). Final draft: <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4100.pdf">n4100</a> (2014-07-04)
</td>
<td> <a href="experimental/fs.html" title="cpp/experimental/fs"><tt>filesystem</tt></a>
</td>
</tr>
<tr>
<td> ISO/IEC TS
<p>19570:2015
</p>
</td>
<td> C++ Extensions for Parallelism
</td>
<td> Published 2015-06-24. (<a rel="nofollow" class="external text" href="http%3A//www.iso.org/iso/home/store/catalogue_tc/catalogue_detail.htm%3Fcsnumber%3D65241">ISO Store</a>). Final draft: <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4507.pdf">n4507</a> (2015-05-05)
</td>
<td> <a href="experimental/parallelism.html" title="cpp/experimental/parallelism"><tt>parallelism</tt></a>
</td>
</tr>
<tr>
<td> ISO/IEC DTS
<p>19568:xxxx
</p>
</td>
<td> C++ Extensions for Library Fundamentals
</td>
<td> DTS. Final draft: <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4480.html">n4480</a> (2015-04-07)
</td>
<td>
<a href="experimental/memory.html" title="cpp/experimental/lib extensions"><tt>library extensions</tt></a>
</td>
</tr>
<tr>
<td> ISO/IEC DTS
<p>19571:xxxx
</p>
</td>
<td> C++ Extensions for Concurrency
</td>
<td> DTS: Draft: <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4538.pdf">n4538</a> (2015-05-20)
</td>
<td> <a href="experimental/concurrency.html" title="cpp/experimental/concurrency"><tt>concurrency</tt></a>
</td>
</tr>
<tr>
<td> ISO/IEC DTS
<p>19217:xxxx
</p>
</td>
<td> Concepts TS
</td>
<td> PDTS. Draft: <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4377.pdf">n4377</a> (2015-02-09)
</td>
<td>
<a href="language/concepts.html" title="cpp/language/constraints">constraints and concepts</a>
</td>
</tr>
<tr>
<td> ISO/IEC DTS 19568:xxxx
</td>
<td> C++ Extensions for Library Fundamentals, Version 2
</td>
<td> In development. Draft: <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4529.html">n4529</a> (2015-05-22)
</td>
<td> <a href="experimental/lib_extensions_2.html" title="cpp/experimental/lib extensions 2"><tt>library extensions 2</tt></a>
</td>
</tr>
<tr>
<td> ISO/IEC DTS
<p>19569:xxxx
</p>
</td>
<td> Array Extensions TS
</td>
<td> Under overhaul. Abandoned draft: <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3820.html">n3820</a> (2013-10-10)
</td>
<td>
</td>
</tr>
<tr>
<td> ISO/IEC PRF TS 19841
</td>
<td> Transactional Memory TS
</td>
<td> DTS, Final draft: <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4514.pdf">n4514</a> (2015-05-08)
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td> Ranges TS
</td>
<td> In development, Draft <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4382.pdf">n4382</a> (2015-04-12)
</td>
<td>
</td>
</tr>
<tr>
<td> ISO/IEC
<p>DTS 19216:xxxx
</p>
</td>
<td> Networking TS
</td>
<td> In development, Draft <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4478.html">n4478</a> (2015-04-13)
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td> Modules
</td>
<td> In development, Draft <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4465.pdf">n4465</a> (2015-04-13) and <a rel="nofollow" class="external text" href="http%3A//www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4466.pdf">n4466</a> (2015-04-13)
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td> Numerics TS
</td>
<td> Early development
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td> Concurrency TS part 2
</td>
<td> Early development
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td> Parallelism TS part 2
</td>
<td> Early development
</td>
<td>
</td>
</tr>
</table>

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